Home | History | Annotate | Download | only in vega 
      1 /**************************************************************************
      2  *
      3  * Copyright 2009 VMware, Inc.  All Rights Reserved.
      4  *
      5  * Permission is hereby granted, free of charge, to any person obtaining a
      6  * copy of this software and associated documentation files (the
      7  * "Software"), to deal in the Software without restriction, including
      8  * without limitation the rights to use, copy, modify, merge, publish,
      9  * distribute, sub license, and/or sell copies of the Software, and to
     10  * permit persons to whom the Software is furnished to do so, subject to
     11  * the following conditions:
     12  *
     13  * The above copyright notice and this permission notice (including the
     14  * next paragraph) shall be included in all copies or substantial portions
     15  * of the Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
     21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     24  *
     25  **************************************************************************/
     26 
     27 #include "VG/openvg.h"
     28 
     29 #include "vg_context.h"
     30 
     31 #include "matrix.h"
     32 #include "api.h"
     33 
     34 void vegaLoadIdentity(void)
     35 {
     36    struct vg_context *ctx = vg_current_context();
     37    struct  matrix *mat = vg_state_matrix(&ctx->state.vg);
     38    matrix_load_identity(mat);
     39 }
     40 
     41 void vegaLoadMatrix(const VGfloat * m)
     42 {
     43    struct vg_context *ctx = vg_current_context();
     44    struct  matrix *mat;
     45 
     46    if (!ctx)
     47       return;
     48 
     49    if (!m || !is_aligned(m)) {
     50       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
     51       return;
     52    }
     53 
     54    mat = vg_state_matrix(&ctx->state.vg);
     55    matrix_init(mat, m);
     56    if (!matrix_is_affine(mat)) {
     57       if (ctx->state.vg.matrix_mode != VG_MATRIX_IMAGE_USER_TO_SURFACE) {
     58          matrix_make_affine(mat);
     59       }
     60    }
     61 }
     62 
     63 void vegaGetMatrix(VGfloat * m)
     64 {
     65    struct vg_context *ctx = vg_current_context();
     66    struct matrix *mat;
     67 
     68    if (!ctx)
     69       return;
     70 
     71    if (!m || !is_aligned(m)) {
     72       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
     73       return;
     74    }
     75 
     76    mat = vg_state_matrix(&ctx->state.vg);
     77    memcpy(m, mat->m, sizeof(VGfloat)*9);
     78 }
     79 
     80 void vegaMultMatrix(const VGfloat * m)
     81 {
     82    struct vg_context *ctx = vg_current_context();
     83    struct matrix *dst, src;
     84 
     85    if (!ctx)
     86       return;
     87 
     88    if (!m || !is_aligned(m)) {
     89       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
     90       return;
     91    }
     92    matrix_init(&src, m);
     93    dst = vg_state_matrix(&ctx->state.vg);
     94    if (!matrix_is_affine(&src)) {
     95       if (ctx->state.vg.matrix_mode != VG_MATRIX_IMAGE_USER_TO_SURFACE) {
     96          matrix_make_affine(&src);
     97       }
     98    }
     99    matrix_mult(dst, &src);
    100 
    101 }
    102 
    103 void vegaTranslate(VGfloat tx, VGfloat ty)
    104 {
    105    struct vg_context *ctx = vg_current_context();
    106    struct matrix *dst = vg_state_matrix(&ctx->state.vg);
    107    matrix_translate(dst, tx, ty);
    108 }
    109 
    110 void vegaScale(VGfloat sx, VGfloat sy)
    111 {
    112    struct vg_context *ctx = vg_current_context();
    113    struct matrix *dst = vg_state_matrix(&ctx->state.vg);
    114    matrix_scale(dst, sx, sy);
    115 }
    116 
    117 void vegaShear(VGfloat shx, VGfloat shy)
    118 {
    119    struct vg_context *ctx = vg_current_context();
    120    struct matrix *dst = vg_state_matrix(&ctx->state.vg);
    121    matrix_shear(dst, shx, shy);
    122 }
    123 
    124 void vegaRotate(VGfloat angle)
    125 {
    126    struct vg_context *ctx = vg_current_context();
    127    struct matrix *dst = vg_state_matrix(&ctx->state.vg);
    128    matrix_rotate(dst, angle);
    129 }
    130